重金属离子对凡纳滨对虾肝胰脏MT含量的影响  

Effects of heavy metal ions on metallothionein concentration in hepatopancreas of Litopenaeus vannamei

作　　者：吴众望[1] 潘鲁青[1] 

机构地区：[1]中国海洋大学海水养殖教育部重点实验室,山东青岛266003

出　　处：《水产学报》2005年第5期715-718,共4页Journal of Fisheries of China

基　　金：山东省科技兴海项目<低盐度地下卤水凡纳滨对虾养殖技术的开发研究>资助(2001-3-6)

摘　　要：The metallothionein（MT） concentration in hepatopancreas of Litopenaeus vannamei changed significantly with the increasing of metal ions concentration and prolongation of exposure time（P<0.05）,whereas that in the control groups had no marked changes（P>0.05）.Exposed to three heavy metal ions,the MT concentration in hepatopancreas changed very significantly in 6 h（P<0.01）. The MT concentration inducted by Cu2+(0.1,0.2,0.5,1 mg·L-1), Zn2+(1,2, 5 mg·L-1)and Cd2+(0.05,0.1 mg·L-1)increased in 96 h with time and changed stably after 48 h.In addition,the MT concentration inducted by Zn2+(10 mg·L-1) and Cd2+(0.25,0.5 mg·L-1)was up to max.at 48 h,began to decrease with time passing by,and still higher than that in the control groups.Meanwhile the inductive ratio of three heavy metal ions on metallothionein concentration were Cd2+>Cu2+>Zn2+ in experimental time.The metallothionein （MT） concentration in hepatopancreas of Litopenaeus vannamei changed significantly with the increasing of metal ions concentration and prolongation of exposure time （ P 〈 0.05 ）, whereas that in the control groups had no marked changes （ P 〉 0.05 ）. Exposed to three heavy metal ions, the MT concentration in hepatopancreas changed very significantly in 6 h （P〈0.01）. The MTconcentration inducted by Cu^2＋（0.1, 0.2, 0.5, 1 mg·L^-1）, Zn^2＋（1, 2, 5 mg·L^-1） and Cd^2＋ （0.05, 0.1 mg·L^-1 ） increased in 96 h with time and changed stably after 48 h. In addition, the MT concentration inducted by Zn^2＋ （ 10 mg·L^-1 ） and Cd^2＋ （0.25, 0.5 mg·L^-1） was up to max. at 48 h, began to decrease with time passing by, and still higher than that in the control groups. Meanwhile the inductive ratio of three heavy metal ions on metallothionein concentration were Cd^2＋ 〉Cu^2＋ 〉Zn^2＋ in experimental time.

关 键 词：重金属离子 凡纳滨对虾 肝胰脏 金属硫蛋白 

分 类 号：S917[农业科学—水产科学]